Abstract: Polymeric polyesterols are prepared by in-situ polymerization of ethylenically unsaturated monomers in polyesterols in the presence of prepolymers made from polyesterols and isocyanates.

Abstract: The invention relates to a process for the production of Guerbet alcohols by condensation of aliphatic alcohols in the presence of alkali metal or alkaline earth metal hydroxides as catalyst using the Guerbet reaction, in which the initial pressure in the reactor corresponds to the vapor pressure of the alcohol components used and, during the reaction, the pressure is continually reduced to the vapor pressure of the reaction mixture at the particular temperature.

Abstract: The invention relates to polyetheresterols obtained by condensation of a polyfunctional carboxylic acid with an alcohol component, wherein the alcohol component comprises a mixture of alkanediols and etherdiols of the formula ##STR1## where m=1 to 3n.gtoreq.3 andR.sup.I, R.sup.II, R.sup.III and R.sup.IV are identical or different and, independently of one another, are hydrogen or C.sub.1 - to C.sub.4 -alkyl,and the ratio between ether and ester groups in the polyetheresterol is in the range from 0.3:1 to 1.5:1, which are suitable, in particular, for the preparation of polyurethanes having reduced fogging.

Abstract: The invention relates to polyetheresterols obtained by condensation of a polyfunctional carboxylic acid with an alcohol component, wherein the alcohol component comprises a mixture of alkanediols and etherdiols of the formula ##STR1## where m=1 to 3n.gtoreq.3 andR.sup.I, R.sup.II, R.sup.III and R.sup.IV are identical or different and, independently of one another, are hydrogen or C.sub.1 - to C.sub.4 -alkyl,and the ratio between ether and ester groups in the polyetheresterol is in the range from 0.3:1 to 1.5:1, which are suitable, in particular, for the preparation of polyurethanes having reduced fogging.

Abstract: A gas discharge lamp is disclosed having a double electrode arrangement in a discharge space. The discharge space is defined by a glass tube sealed in gas-tight fashion and which is subdivided approximately along a longitudinal center-line by a separation plate. One end of the tube is open and receives an insulating disc through which lead wires for the electrodes pass. The insulating disc is connected in gas-tight fashion to the tube. The separation plate extends from the insulating disc towards the opposite end of the tube and terminates at a point spaced from the end of the tube. Accordingly, gas-tight discharge half spaces are formed at both sides of the separation plate with a connecting discharge space at the end of the tube which is not subdivided by the separation plate.

Abstract: A gas discharge lamp is disclosed for DC operation which has a double electrode arrangement and a discharge-tight cross connection between electrode spaces. Discharge spaces for the electrodes are provided within a glass envelope. An electrode member in the envelope includes an electrical insulating disk with a central continuous interior bore having two electrodes therein and one or two side bores formed from a periphery of the disk to the interior bore. The side bores accommodate pumping connecting pieces and input lines connected to the electrodes. The interior bore is subdivided by a gas-permeable discharge-tight diaphragm positioned between the two electrodes. Exterior surfaces of the disk are provided with glass solder for joining with face surfaces of the envelope.